MSM6222 데이터 시트보기 (PDF) - Oki Electric Industry

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MSM6222

DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER

Oki Electric Industry 

¡ Semiconductor

MSM6222B-xx

(2) When data input/output to and from the CPU is carried out by 4 bits (DB4 to DB7):

q Turn on the power.

w Wait for 15 ms or more after VDD has reached 4.5V or more.

e Set 8B/4B at "H" by initial setting of instruction.

r Wait for 4.1 ms or more.

t Set 8B/4B at "H" by initial setting of instruction.

y Wait for 100 ms or more.

u Set 8B/4B at "H" by initial setting of instruction.

i Check the busy flag as No Busy.

o Set 8B/4B at "L". Set LCD line number (N) and character font (F).

!0 Wait for 100 ms or more.

!1 Set 8B/4B at "L". Set LCD line number (N) and character font (F).

!2 Check No Busy.

!3 Clear the display by setting the display mode.

!4 Check No Busy.

!5 Clear the display.

!6 Check No Busy.

!7 Set the shift mode.

!8 Check No Busy.

!9 Initialization completed.

Example of Instruction Code for Steps e, t, and u.

R/W RS DB7 DB6 DB5 DB4

L L L LHH

Example of Instruction Code for Step i.

R/W RS DB7 DB6 DB5 DB4

H L BF O6 O5 Q4

Example of Instruction Code for Step o.

R/W RS DB7 DB6 DB5 DB4

LLLLHL

Execute two-step accesses in 4 bits from Step !1 to Step !.8

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